48 lines
1.5 KiB
JavaScript
48 lines
1.5 KiB
JavaScript
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import {StringMapWrapper, ListWrapper} from 'angular2/src/facade/collection';
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import {isPresent} from 'angular2/src/facade/lang';
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import {ControlGroup, Control, OptionalControl, OptionalControlGroup} from 'angular2/forms';
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export class FormBuilder {
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group(controlsConfig, extra = null):ControlGroup {
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var controls = this._reduceControls(controlsConfig);
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var optionals = isPresent(extra) ? StringMapWrapper.get(extra, "optionals") : null;
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var validator = isPresent(extra) ? StringMapWrapper.get(extra, "validator") : null;
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if (isPresent(validator)) {
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return new ControlGroup(controls, optionals, validator);
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} else {
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return new ControlGroup(controls, optionals);
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}
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}
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control(value, validator:Function = null):Control {
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if (isPresent(validator)) {
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return new Control(value, validator);
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} else {
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return new Control(value);
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}
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}
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_reduceControls(controlsConfig) {
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var controls = {};
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StringMapWrapper.forEach(controlsConfig, (controlConfig, controlName) => {
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controls[controlName] = this._createControl(controlConfig);
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});
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return controls;
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}
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_createControl(controlConfig) {
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if (controlConfig instanceof Control || controlConfig instanceof ControlGroup) {
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return controlConfig;
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} else if (ListWrapper.isList(controlConfig)) {
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var value = ListWrapper.get(controlConfig, 0);
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var validator = controlConfig.length > 1 ? controlConfig[1] : null;
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return this.control(value, validator);
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} else {
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return this.control(controlConfig);
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}
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}
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}
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